题目内容：
The study of trees, branches and roots shows that__________．
A． there were larger amounts of gold in the branches than in the seeds B． there were smaller amounts of gold in the roots than in the branches
C． there were less amounts of gold in the seeds growing on the ends of branches thanseeds growing nearest to the tree trunks
D． there was more gold in the branches than in the roots
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答案解析：